June 12, 2021

Link Budget Analysis MCQ’s

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This set of Digital Communications Systems Multiple Choice Questions & Answers (MCQs) focuses on “Link Budget Analysis”.

1. According to reciprocity theorem, _____ and _____ are identical.
a) Transmitting power and receiving power
b) Transmitting gain and receiving gain
c) Effective area and physical area
d) None of the mentioned

2. Mechanism contributing to a reduction in efficiency is called as
a) Amplitude tapering
b) Blockage
c) Edge diffraction
d) All of the mentioned

3. Link budget can help in predicting
a) Equipment weight and size
b) Technical risk
c) Prime power requirements
d) All of the mentioned

4. Effective radiated power of an isotropic radiator can be given as a product of
a) Radiated power and received power
b) Effective area and physical area
c) Transmitted power and transmitting gain
d) Receiving power and receiving gain

5. Which factor adds phase noise to the signal?
a) Jitter
b) Phase fluctuations
c) Jitter & Phase fluctuations
d) None of the mentioned

6. Antenna’s efficiency is given by the ratio of
a) Effective aperture to physical aperture
b) Physical aperture to effective aperture
c) Signal power to noise power
d) Losses

7. Link budget consists of calculation of
a) Useful signal power
b) Interfering noise power
c) Useful signal & Interfering noise power
d) None of the mentioned

8. Space loss occurs due to a decrease in
a) Electric field strength
b) Efficiency
c) Phase
d) Signal power

9. Antennas are used
a) As transducer
b) To focus
c) As transducer & To focus
d) None of the mentioned

10. Which is the primary cost for degradation of error performance?
a) Loss in signal to noise ratio
b) Signal distortion
c) Signal distortion & Loss in signal to noise ratio
d) None of the mentioned

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